Display screen with a user interface



The FIGURE is a front view of a display screen with a user interface showing the new design.

The broken line showings of the display screen, text, and remainder of the human figures in the user interface are for the purpose of illustrating environmental structure and unclaimed portions of the display screen with a user interface and form no part of the claimed design. 

The ornamental design for a display screen with a user interface, as shown and described. 